Journal
PHYSICAL REVIEW B
Volume 85, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.045118
Keywords
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Funding
- State Key Program for Basic Researches of China [2009CB929504, 2011CB922103, 2010CB923400]
- National Natural Science Foundation of China [10874066, 11174125, 11074109, 91021003]
- PAPD of Jiangsu Higher Education Institutions
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We investigate transport properties of the surface states of three-dimensional topological insulator thin films in the presence of an electrostatic potential gamma and a spin-splitting Zeeman field g. It is shown that there exist a quantum pseudospin Hall phase, a quantum anomalous Hall phase, and a common insulator phase in this system. By tuning g and gamma, three quantum phase transitions between them can occur accompanied with energy-band closing, each of which is characterized by a change of the quantized pseudospin Chern numbers.
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